Rock.Model.LocationService.GetPath C# (CSharp) Method

        public string GetPath( int locationId )
        {
            var locations = GetAllAncestors( locationId );
            if ( locations.Any() )
            {
                var locationNames = locations.Select( l => l.Name ).ToList();
                locationNames.Reverse();
                return locationNames.AsDelimited( " > " );
            }

            return string.Empty;
        }

        /// <summary>
        /// Loads the dropdowns.
        /// </summary>
        private void BindLocations()
        {
            var locations = new Dictionary<int, string> { { 0, "" } };

            if ( _group != null )
            {
                var locationPaths = new Dictionary<int, string>();
                var locationService = new LocationService( _rockContext );

                foreach ( var location in _group.GroupLocations
                    .Where( l =>
                        l.Location.Name != null &&
                        l.Location.Name != "" )
                    .Select( l => l.Location ) )
                {
                    // Get location path
                    string parentLocationPath = string.Empty;
                    if ( location.ParentLocationId.HasValue )
                    {
                        var locId = location.ParentLocationId.Value;
                        if ( !locationPaths.ContainsKey( locId ) )
                        {
                            locationPaths.Add( locId, locationService.GetPath( locId ) );
                        }
                        parentLocationPath = locationPaths[locId];
                    }

                    if ( !locations.ContainsKey( location.Id ) )
                    {
                        locations.Add( location.Id, new List<string> { parentLocationPath, location.Name }.AsDelimited( " > " ) );
                    }
                }
            }

            if ( locations.Any() )
            {
                ddlLocation.DataSource = locations;
                ddlLocation.DataBind();
            }
        }